US2072384A
Expired / Lapsed
US
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Method of and apparatus for proportioning combustible fluids
Assignee: Cutler Hammer Inc
•
Filing: 1933-12-01
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Granted: 1937-03-02
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Expires: 1953-12-01
Abstract
No abstract record available.
Inventors
- 👤 Edwin X Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:42
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0346; Y10T137/2278; Y10T137/2322; Y10T137/2496; Y10T137/2499; Y10T137/2504; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/8158; Y10T137/8175; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-03-01 | 1940-08-31 | 1941-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-01 | 1944-08-31 | 1945-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-01 | 1948-08-31 | 1949-03-02 | $7700.00 | Window Closed / Lapsed |